#include <bits/stdc++.h>

using namespace std;

ifstream f("matrix.in");
ofstream g("matrix.out");

int s[1002][1002], sp[1002][1002],n,m;
int A,B;

int main()
{
    int i,j, c, cnt = 0, x, y;;
    char w[1002];
    f>>n>>m;
    for(i=1; i<=n; i++)
    {
        f>>(w+1);
        for(j=1; j<=n; j++)
        {
            c=w[j]-'a'+1;
            s[i][j]=c+s[i][j-1]+s[i-1][j]-s[i-1][j-1];
            sp[i][j]=c*c+sp[i][j-1]+sp[i-1][j]-sp[i-1][j-1];
        }
    }
    for(i=1; i<=m; i++)
    {
        f>>(w+1);
        for(j=1; j<=m; j++)
        {
            c=w[j]-'a'+1;
            A=A+c;
            B=B+c*c;
        }
    }
    for(i=m; i<=n; i++)
        for(j=m; j<=n; j++)
        {
            x=s[i][j]-s[i-m][j]-s[i][j-m]+s[i-m][j-m];
            y=sp[i][j]-sp[i-m][j]-sp[i][j-m]+sp[i-m][j-m];
            if (x == A && y == B) cnt++;
        }
    g << cnt << "\n";
    f.close();
    g.close();
    return 0;
}